Performance Bond Margin Changes Effective 8/17/07

Performance Bond (Margin) Advisory Notices

To	Clearing Member Firms, Chief Financial Officers, Back Office Managers & Margin Managers
From	Clearing House Department
Subject	Performance Bond Margin Changes Effective 8/17/07
Notice Date	2007-08-16
Notice Number	07-190
Effective Date	2007-08-17
As per the normal review of market volatility to ensure adequate collateral coverage, the Chicago Mercantile Exchange Inc., Performance Bond staff approved the performance bond requirements for the products listed on the attached advisory. These margins will become effective with the close of business on Friday, August 17, 2007. For the full text of this advisory . . .